remove broken install line from the Dockerfile
remove broken install line from the Dockerfile

dcchivian/kb_megahit,msneddon/kb_megahit,dcchivian/kb_megahit,dcchivian/kb_megahit,msneddon/kb_megahit,msneddon/kb_megahit,msneddon/kb_megahit,dcchivian/kb_megahit,dcchivian/kb_megahit,msneddon/kb_megahit,dcchivian/kb_megahit,msneddon/kb_megahit,msneddon/kb_megahit,dcchivian/kb_megahit